查询词典 fin

Anal fin spine conspicuous, joined to the fin by a membrane but clearly independent of it.

臀鳍棘显著的，连到了鳍经由一个膜但是清楚独立的它。

Anal fin origin opposite that of second dorsal fin.

第二背鳍鳍的那对面的臀鳍起源。

There are 8-9 spines and 7-8 soft rays in anal fin, and 7-8 soft rays in the pectoral fin.

肛门的肋片和在胸鳍 7-8 软线有 8-9 刺和 7-8 软照射。

Old World freshwater catfishes having naked skin and a long anal fin more or less merged with the eellike caudal fin.

东半球的淡水鲇鱼，体表无鳞，有类似鳗鱼尾鳍的很长的臀鳍。

On behalf of the wedded couple, I'd like to thank you all for the stories that have appeared on the internet and in print, but I'd like to point out that there were some untruths in those stories, for instance, that there was a dish by the name of "Braised bamboo fungus and fish maw in sharks fin" on the menu. As we all know, Yao Ming is the frontman of the "Protecting sharks begins with me" campaign and he has promised at the WildAid event that he would not eat sharks fin at any time or under any circumstance. Hence, there was no sharks fin at the wedding tonight.

同时此位发言人还就姚明婚宴上出现鱼翅的事件进行了声明：&这一段时间无论是在网络上还是在报纸上都出现了一些相关的报道，在这里我代表二位新人表示感谢，但是必须指出的是这中间存在的一些相对失实的报道，比如说说姚明在婚宴中摆出一道名为'红烧竹笙鱼肚烩鱼翅'的菜，但是大家都知道姚明是'护鲨行动、从我做起'公益活动的代言人，在出席世界野生救援协会主办的'全球野生动物保护宣言'活动中，姚明曾经郑重承诺在任何时间、任何情况下他本人都拒绝食用鱼翅，因此这次婚宴上将没有鱼翅这道菜。&

LT3468ES5-1 Pinout: 8-bit Resolution 1 Gsps Sampling Rate ADC Gain Adjust 2 GHz Full Power Input Bandwidth Fs = 1 Gsps, Fin = 20 MHz: C SINAD = 45 dB (7.4 Effective Bits) SFDR = 58 dBc Fs = 1 Gsps, Fin = 500 MHz: C SINAD = 44 dB (7.2 Effective Bits) SFDR = 56 dBc Fs = 1 Gsps, Fin = 1000 MHz (-3 dB Fs): C SINAD = 42 dB (7.0 Effective Bits) SFDR = 52 dBc 2 Tone IMD:-53 dBc (489 MHz and 490 MHz) at 1 Gsps DNL = 0.3 LSB INL = 0.7 LSB Low Bit Error Rate (10-13) at 1 Gsps Very Low Input Capacitance: 0.4 pF 500 mVpp Differential or Single-ended Analog Inputs Differential or Single-ended 50 ECL Compatible Clock Inputs ECL or LVDS/HSTL Output Compatibility Data Ready Output with Asynchronous Reset Gray or Binary Selectable Output Data; NRZ Output Mode Power Consumption: 3.4 W at TJ = 90 C Dual Power Supply: 5 V Radiation Tolerance Oriented Design 150 Krad (Si Measured

LT3468ES5-1引脚说明： 8位分辨率1 GSPS的采样速率ADC的增益调整2 GHz的全功率输入带宽= 1 GSPS的二恶英，翅= 20兆赫中：C的SINAD = 45分贝（7.4有效位）的SFDR = 58 dBc的二恶英= 1 GSP的，财务= 500兆赫中：C的SINAD = 44分贝（7.2有效位）的SFDR = 56 = 1 GSPS的dBc的外勤人员，财务= 1000兆赫（-3分贝财经事务）中：C的SINAD = 42分贝（7.0有效位）的SFDR = 52 dBc的2声调发展学院：-53 dBc的（489兆赫和1 GSPS的的DNL = 0.3的LSB的INL = 0.7 LSB的低误码率（10-13）在1 GSPS的非常低输入电容：0.4 pF的490兆赫）500 mVpp的差分或单端模拟输入差分或单端50Ω的ECL兼容的时钟输入的ECL或LVDS / HSTL输出兼容性数据与异步复位灰色或二进制可选的输出数据就绪输出； NRZ码输出模式下的功耗：3.4 W于温度Tj = 90 C双电源：5伏辐射性导向设计

Long and thin mouth, back Light gray or blue, pure white for the ventral, dorsal fin-shaped as a triangle, two pectoral fin like the palm of your hand, flat tail fin in the middle fork, good at swimming, the maximum speed of 80 km around .

嘴部又长又细，背呈浅灰色或蓝色，腹面为纯白色，背鳍形如一个小三角，胸鳍宛如两只手掌，尾鳍扁平，中间分叉，善于游水，时速可达80千米左右。

On the basis of propulsive model,a mathematical model which is used to describe the motion of pitching and heaving of dolphin's caudal fin by ways of coordinate transformation is deduced.Meanwhile,this model can show the relationship between the motion of caudal fin and parameters related,then the motion of caudal fin of dolphin is simulated by the software of Matlab which showed the swimming principle.

以海豚背腹式摆动推进方程为基础，应用坐标变换的方法，建立了描述海豚尾鳍俯仰－沉浮运动的数学模型，同时建立了描述豚尾各运动参数之间关系的方程，随后运用Matlab的仿真功能再现了海豚在游动过程中尾鳍的运动规律。

Based on motion similarity of microrobot drive fin and fish caudal fin , this paper discusses fish muscle hydrodynamics, and analyzes propulsion force produced by biomimetic fish-like drive fin.

基于鱼类肌肉水动力学的研究，利用鱼类尾鳍与微机器人摆翼运动相似性，对仿生鱼形微机器人摆翼所产生的推进力进行了分析。

The Fuzzy-PID controller of fin stabilizer was designed based on fuzzy control and PID control theory. The controller of Fin Stabilizer is designed which uses roll angle and angular velocity of roll angel as input and fin angel as output. The model of ship is built based on Conolly theory. The controller is simulated using MATLAB. Results shows that compared with conventional PID controller, the FUZZY-PID controller has better effect.

设计了基于模糊控制和PID控制理论的FUZZY-PID复合控制减摇鳍控制系统，以横摇角和横摇角速度为输入量，鳍角为输出量，基于Conolly理论建立了船舶模型，利用MATLAB针对不同海情对控制器进行了仿真，结果表明减摇鳍模糊控制器动态响应性能和稳态控制精度均十分理想，能够满足减摇鳍控制系统的控制要求。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。